\begin{tabular}{|l|l|}
\hline Statement & Reason \\
\hline 1. $\overline{EF} \cong \overline{GF}$ & Given \\
\hline 2. $\overline{DE} \cong \overline{DG}$ & Given \\
\hline 3. $\overline{DF} \cong \overline{DF}$ & Reflexive Property of Congruence \\
\hline 4. $\triangle DEF \cong \triangle DGF$ & SSS Congruence Postulate \\
\hline
\end{tabular}
\\(\boxed{\triangle DEF \cong \triangle DGF}\\)